It’s not just the Bighorn of my Friends, it is EVERY inline Muzzleloader i have owned, or Shot. That includes The Knight Mountaineer, Knight Bighorn, Knight MK-85, and White Super 91, They ALL will Seize up tight, and Be DIFFICULT to Remove When shooting Real Blackpowder, and the Few times i have Shot Triple Seven (Mainly with Chet, 1874Sharpsshooter) He warned me the Plugs would be Tight, and He was ABSOLUTELY Correct. This is With GREASED Breech Plugs, No doubt the Grease Helps SUBSTANTIALLY, But Fact is they will Stil Seize up and be DIFFICULT to Remove. I simply mentioned my Friends Bighorn as I don’t even Own an inline anymore, I can grab his Rifle anytime i wanted and Test this Teflon Anti-Seize. I have no doubt this Stuff will Work, Just like it has with the Nipples in my Sidelocks
I agree with Sabotloader on the Teflon Tape on Breech Plugs, When it works, it works well. But when it Fails, it Fails Quite well to! I had it happen, And is precisely why i chose to Stop using Teflon Tape, and start using Grease. The Problem i have with the Teflon Tape is Not Knowing if you “Nicked” the Nose (Sealing edge) of the Plug as you were installing it? You simply do NOT know if you Got a Good Seal or not? All you can do is Hope, and I didn’t like that! I understood the Teflon Tape method Well, and like i said, when it worked it worked well, But when it Failed You had a SEIZED Plug on your Hands
Here is a Breech plug I Teflon Taped, as you can clearly see i had a GOOD seal on this one
But more often than not, i found myself RIGHT HERE after a Shooting Session, Especially anything over 8-10 Shots, and the 20 Plus Shots i took with my Mountaineer were GUARANTEED to Be SEIZED Up TIGHT, EVEN Though i had the Breech Plugs COMPLETELY Covered in Grease before Shooting.
I literally made this Setup SPECIFICALLY for Removing Seized Breech Plugs
All i can say about this Permatex Thread Sealant #80632 is that it WORKS, and it works REALLY REALLY well, unlike ANYTHING else i have ever Seen? Breech Plug Grease isn’t even Close! I have no Doubt this Stuff Would Work extremely well on Breech Plugs, As it has on the Nipples in my Sidelocks, They can be Removed with my Fingers after breaking them loose, that was NEVER EVER the Case with Breech Plug Grease, and the Regular Anti-Seize I commonly used, I had to keep a Wrench on ALL the Way out. This Teflon Anti-Seize #80632 is TOTALLY Different Stuff
The Key would be Coating the Surfaces the Red Arrows are Pointing at, That front Sealing edge is EXTREMELY important! Some folks think the Threads are All that is needed Coating? WRONG!! You want a Good Coating where the Red Arrows are Pointing, as well as the Threads
The only downside i can think of? Is folks that Fear the Thought of Teflon getting in their Barrel, This Stuff is similar to Grease, in that it could be somewhat Messy, The chances of you getting some of this in your Barrel (Breech end of Course) Running a Breech Plug in Is HIGHLY Probable (Depends on how Careless you are?) I notice this Stuff REALLY Sticks to the Nipple Threads, and requires a Little more effort to Clean it off than Grease, This is No doubt why it works So well. For Nipple threads in my Sidelock Muzzleloaders, i feel this Stuff is AWESOME!! And if i stil owned an inline, i would NO DOUBT use this.